java.sql.SQLException: Closed Connection: next at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:114) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:156) at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:775) at oracle.jdbc.driver.OracleResultSetImpl.next(OracleResultSetImpl.java:164)